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Consider a regenerative vapor power cycle with two feedwater heaters, a closed one and an open one. Steam enters the first turbine stage at 12 MPa, 480 deg C, and expands to 2 MPa. Some steam is extracted at 2 MPa and fed to the closed feedwater heater. The remainder expands through the second-stage turbine to 0.3 MPa, where an additional amount is extracted and fed into the open feedwater heater operating at 0.3 MPa. The steam expanding through the third-stage turbine exits at the condenser pressure of 6 kPa. Feedwater leaves the closed heater at 210 deg C, 12 MPa, and condensate exiting as saturated liquid at 2 MPa is trapped into the open feedwater heater. Saturated liquid at 0.3 MPa leaves the open feedwater heater. Pump and each turbine stage have an isentropic efficiency of 80%, Determine for the cycle: the heat transfer to the working fluid pssing through the steam generator, in kJ per kg of steam entering the first stage turbine. the thermal efficiency. the heat transfer from the working f passing through the condenser to the cooling water, in kJ per kg of steam entering the first-si ge tui bine. A. 1481 3 kJ/kg, 2395 7 kJ/kg, 48.2% B 1481 3 kJ/kg, 2395.7 kJ/kg, 38.2% C 2481 3 kJ/kg, 2395.7 kJ/kg, 38.2% D. 1481 3 kJ/kg 1395 7 kJ/kg, 38.2% Condemser

Consider a regenerative vapor power cycle with two feedwater heaters, a closed one and an open one. Steam enters the first turbine stage at 12 MPa, 480 deg C, and expands to 2 MPa. Some steam is extracted at 2 MPa and fed to the closed feedwater heater. The remainder expands through the second-stage turbine to 0.3 MPa, where an additional amount is extracted and fed into the open feedwater heater operating at 0.3 MPa. The steam expanding through the third-stage turbine exits at the condenser pressure of 6 kPa. Feedwater leaves the closed heater at 210 deg C, 12 MPa, and condensate exiting as saturated liquid at 2 MPa is trapped into the open feedwater heater. Saturated liquid at 0.3 MPa leaves the open feedwater heater. Pump and each turbine stage have an isentropic efficiency of 80%, Determine for the cycle: the heat transfer to the working fluid pssing through the steam generator, in kJ per kg of steam entering the first stage turbine. the thermal efficiency. the heat transfer from the working f passing through the condenser to the cooling water, in kJ per kg of steam entering the first-si ge tui bine. A. 1481 3 kJ/kg, 2395 7 kJ/kg, 48.2% B 1481 3 kJ/kg, 2395.7 kJ/kg, 38.2% C 2481 3 kJ/kg, 2395.7 kJ/kg, 38.2% D. 1481 3 kJ/kg 1395 7 kJ/kg, 38.2% Condemser

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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m, = 1.5 x 10* kg/s T = 480°C iPi= 12 MPa %3D Steam generator 2 Condenser 6 kPa Closed heater Open heater 0.3 MPа Sat. 9. 2.0 MPa liquid T, = 210°C %3D Po 12 MPa 10+ Sat. Pump 2 Pump 1 liquid Trap
Transcribed Image Text:m, = 1.5 x 10* kg/s T = 480°C iPi= 12 MPa %3D Steam generator 2 Condenser 6 kPa Closed heater Open heater 0.3 MPа Sat. 9. 2.0 MPa liquid T, = 210°C %3D Po 12 MPa 10+ Sat. Pump 2 Pump 1 liquid Trap
Consider a regenerative vapor power cycle with two feedwater heaters, a closed one and an open one. Steam enters the first turbine stage at 12 MPa, 480 deg C, and expands to 2 MPa. Some steam is extracted at 2 MPa and fed to the closed feedwater heater. The remainder expands through the second-stage turbine to 0.3 MPa, where an additional amount is extracted and fed into the open feedwater heater operating at 0.3 MPa. The steam expanding through the third-stage turbine exits at the condenser pressure of 6 kPa. Feedwater leaves the closed heater at 210 deg C, 12 MPa, and condensate exiting as saturated liquid at 2 MPa is trapped into the open feedwater heater. Saturated liquid at 0.3 MPa leaves the open feedwater heater. Pump and each turbine stage have an isentropic efficiency of 80%, Determine for the cycle: the heat transfer to the working fluid pssing through the steam generator, in kJ per kg of steam entering the first stage turbine. the thermal efficiency. the heat transfer from the working f passing through the condenser to the cooling water, in kJ per kg of steam entering the first-st ge turbine. A. 1481 3 kJ/kg, 2395 7 kJ/kg, 48.2% B 1481 3 kJ/kg, 2395.7 kJ/kg, 38.2% C 2481 3 kJ/kg, 2395.7 kJ/kg, 38.2% D 1481 3 kJ/kg 1395 7 kJ/kg, 38.2% Condenser
Transcribed Image Text:Consider a regenerative vapor power cycle with two feedwater heaters, a closed one and an open one. Steam enters the first turbine stage at 12 MPa, 480 deg C, and expands to 2 MPa. Some steam is extracted at 2 MPa and fed to the closed feedwater heater. The remainder expands through the second-stage turbine to 0.3 MPa, where an additional amount is extracted and fed into the open feedwater heater operating at 0.3 MPa. The steam expanding through the third-stage turbine exits at the condenser pressure of 6 kPa. Feedwater leaves the closed heater at 210 deg C, 12 MPa, and condensate exiting as saturated liquid at 2 MPa is trapped into the open feedwater heater. Saturated liquid at 0.3 MPa leaves the open feedwater heater. Pump and each turbine stage have an isentropic efficiency of 80%, Determine for the cycle: the heat transfer to the working fluid pssing through the steam generator, in kJ per kg of steam entering the first stage turbine. the thermal efficiency. the heat transfer from the working f passing through the condenser to the cooling water, in kJ per kg of steam entering the first-st ge turbine. A. 1481 3 kJ/kg, 2395 7 kJ/kg, 48.2% B 1481 3 kJ/kg, 2395.7 kJ/kg, 38.2% C 2481 3 kJ/kg, 2395.7 kJ/kg, 38.2% D 1481 3 kJ/kg 1395 7 kJ/kg, 38.2% Condenser
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